diff --git a/src/cfgparse.c b/src/cfgparse.c
index d9afd843f..4e4775a6e 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -1592,10 +1592,10 @@ int cfg_parse_global(const char *file, int linenum, char **args, int kwm)
 
 		if (logsrv->maxlen > global.max_syslog_len) {
 			global.max_syslog_len = logsrv->maxlen;
-			logheader = realloc(logheader, global.max_syslog_len + 1);
-			logheader_rfc5424 = realloc(logheader_rfc5424, global.max_syslog_len + 1);
-			logline = realloc(logline, global.max_syslog_len + 1);
-			logline_rfc5424 = realloc(logline_rfc5424, global.max_syslog_len + 1);
+			logheader = my_realloc2(logheader, global.max_syslog_len + 1);
+			logheader_rfc5424 = my_realloc2(logheader_rfc5424, global.max_syslog_len + 1);
+			logline = my_realloc2(logline, global.max_syslog_len + 1);
+			logline_rfc5424 = my_realloc2(logline_rfc5424, global.max_syslog_len + 1);
 		}
 
 		/* after the length, a format may be specified */
@@ -6078,10 +6078,10 @@ stats_error_parsing:
 
 			if (logsrv->maxlen > global.max_syslog_len) {
 				global.max_syslog_len = logsrv->maxlen;
-				logheader = realloc(logheader, global.max_syslog_len + 1);
-				logheader_rfc5424 = realloc(logheader_rfc5424, global.max_syslog_len + 1);
-				logline = realloc(logline, global.max_syslog_len + 1);
-				logline_rfc5424 = realloc(logline_rfc5424, global.max_syslog_len + 1);
+				logheader = my_realloc2(logheader, global.max_syslog_len + 1);
+				logheader_rfc5424 = my_realloc2(logheader_rfc5424, global.max_syslog_len + 1);
+				logline = my_realloc2(logline, global.max_syslog_len + 1);
+				logline_rfc5424 = my_realloc2(logline_rfc5424, global.max_syslog_len + 1);
 			}
 
 			/* after the length, a format may be specified */
diff --git a/src/chunk.c b/src/chunk.c
index e2511076b..7134fead3 100644
--- a/src/chunk.c
+++ b/src/chunk.c
@@ -17,6 +17,7 @@
 
 #include <common/config.h>
 #include <common/chunk.h>
+#include <common/standard.h>
 
 /* trash chunks used for various conversions */
 static struct chunk *trash_chunk;
@@ -60,8 +61,8 @@ struct chunk *get_trash_chunk(void)
 int alloc_trash_buffers(int bufsize)
 {
 	trash_size = bufsize;
-	trash_buf1 = (char *)realloc(trash_buf1, bufsize);
-	trash_buf2 = (char *)realloc(trash_buf2, bufsize);
+	trash_buf1 = (char *)my_realloc2(trash_buf1, bufsize);
+	trash_buf2 = (char *)my_realloc2(trash_buf2, bufsize);
 	return trash_buf1 && trash_buf2;
 }
 
diff --git a/src/standard.c b/src/standard.c
index cfed94d24..c9f68b544 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -3104,7 +3104,7 @@ char *memprintf(char **out, const char *format, ...)
 		}
 
 		allocated = needed + 1;
-		ret = realloc(ret, allocated);
+		ret = my_realloc2(ret, allocated);
 	} while (ret);
 
 	if (needed < 0) {
@@ -3252,7 +3252,7 @@ char *env_expand(char *in)
 			val_len = value ? strlen(value) : 0;
 		}
 
-		out = realloc(out, out_len + (txt_end - txt_beg) + val_len + 1);
+		out = my_realloc2(out, out_len + (txt_end - txt_beg) + val_len + 1);
 		if (txt_end > txt_beg) {
 			memcpy(out + out_len, txt_beg, txt_end - txt_beg);
 			out_len += txt_end - txt_beg;
diff --git a/src/vars.c b/src/vars.c
index d79f317b9..56fade5d9 100644
--- a/src/vars.c
+++ b/src/vars.c
@@ -151,6 +151,7 @@ void vars_init(struct vars *vars, enum vars_scope scope)
 static char *register_name(const char *name, int len, enum vars_scope *scope, char **err)
 {
 	int i;
+	char **var_names2;
 	const char *tmp;
 
 	/* Check length. */
@@ -191,13 +192,14 @@ static char *register_name(const char *name, int len, enum vars_scope *scope, ch
 		if (strncmp(var_names[i], name, len) == 0)
 			return var_names[i];
 
-	/* Store variable name. */
-	var_names_nb++;
-	var_names = realloc(var_names, var_names_nb * sizeof(*var_names));
-	if (!var_names) {
+	/* Store variable name. If realloc fails, var_names remains valid */
+	var_names2 = realloc(var_names, (var_names_nb + 1) * sizeof(*var_names));
+	if (!var_names2) {
 		memprintf(err, "out of memory error");
 		return NULL;
 	}
+	var_names_nb++;
+	var_names = var_names2;
 	var_names[var_names_nb - 1] = malloc(len + 1);
 	if (!var_names[var_names_nb - 1]) {
 		memprintf(err, "out of memory error");